Sorry to necro this thread, my .25 Gauntlet is only 5 months old, cheap at the closeout prices.I use a real sound level meter but they are just a number, to back up the old ears to check out low cost bark suppressors for backyard use. Stock, 4-3D cones, mini Buck-rail and one $200 KOI with adapter all fail with 108db +++. The 3D cones are back in and the rest sent back. As stated in a similar post, don't want $250 suppressor on a $220 dollar rifle..Hill Airgun has one for $110. If this is as good as my TKO on my Disco, about 97db indicated, I'm golden. TKO does not make one for the .25.Cheers